Uber, the US company attempting to disrupt established taxi operators in Europe, is set to appoint a European PR agency to join Westbourne Communications as the communications battle heats up and FleishmanHillard enters the fray.

When Mark Hutchinson started working with TV chef Nigella Lawson 15 years ago, he is unlikely to have bargained for this year's minefield of a divorce and a court case that has heard claims she is a habitual drug user.